如(rú )今燕麦草(cǎo )、小杂(zá )粮、覆膜马铃(líng )薯等耐(nài )旱作物“当(dāng )家”,以水(shuǐ )定粮改变(biàn )了察汗淖(nào )尔湿(shī )地周(zhōu )边(biān )农(nóng )业形态。庞(páng )学(xué )峰给(gěi )记(jì )者算了一笔账:种植燕(yàn )麦草,只搞“雨养”农业(yè ),不使用地下(xià )水。成本下降(jiàng ),加上轮作和(hé )“水改(gǎi )旱”补贴,亩效(xiào )益可比种甜菜增加200元(yuán )人民(mín )币(bì )左右。
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